Year	kWh
1971	101000000
1972	104000000
1973	108000000
1974	112000000
1975	116000000
1976	121000000
1977	125000000
1978	130000000
1979	135000000
1980	140000000
1981	146000000
1982	152000000
1983	157000000
1984	163000000
1985	169000000
1986	544000000
1987	541000000
1988	511000000
1989	518000000
1990	527000000
1991	504000000
1992	486000000
1993	492000000
1994	383000000
1995	512000000
1996	515000000
1997	488000000
1998	512000000
1999	505000000
2000	557000000
2001	603000000
2002	508000000
2003	909000000
2004	1157000000
2005	1134000000
2006	1138000000
2007	1151000000
2008	1305000000
2009	1576000000
2010	1680000000
2011	1735000000
2012	1808000000
2013	2205000000
2014	4234000000
2015	4659000000